Return to work following unilateral enucleation in 34 horses (2000-2008)

Mary Utter, K. L. Wotman, K. R. Covert

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Reasons for study: The effect of unilateral enucleation on vision and potential loss of performance in horses has received little study. Objective: To evaluate the likelihood of return to prior discipline following unilateral enucleation in horses, assessing the role of age at enucleation, equine discipline, reason for enucleation, time to vision loss and eye enucleated. Hypothesis: Unilateral enucleation has no significant effect on likelihood of return to work in horses, for both right and left eyes, across age and discipline. Method: A retrospective review of medical records identified 92 horses that underwent unilateral enucleation at the University of Pennsylvania New Bolton Center from April 2000-April 2008. Case variables determined from the medical record included breed and sex of horse, age at enucleation, which eye was enucleated, reason for enucleation and onset of vision loss. Pre- and post operative occupations were determined by telephone interview with the owner or trainer of each horse. Results: Based on hospital surgery logs, 92 enucleations were performed over the 8 year period and 77 records were available for review, with follow-up information available for 34 horses. Of these, 29/34 (85%) horses returned to work in pleasure or trail riding (11/13), flat racing (7/10), hunter/ jumpers (4/4), dressage (3/3), group lessons (1/1), eventing (1/1), steeplechase (1/1) and as a broodmare (1/1). Four of 5 horses (4/34, or 12% sample) that did not return to work (2 pleasure and 2 racing) were retired due to anticipated or perceived decrease in performance or behaviour change following unilateral enucleation, with the remaining horse retired from racing for lameness issues unrelated to enucleation. Twenty-two of 25 horses (88%) with acute vision loss and 7/9 horses (78%) with gradual vision loss returned to their previous discipline. Conclusions: Horses are able to return to a variety of occupations after unilateral enucleation.

Original languageEnglish (US)
Pages (from-to)156-160
Number of pages5
JournalEquine Veterinary Journal
Volume42
Issue number2
DOIs
StatePublished - Mar 1 2010
Externally publishedYes

Fingerprint

Return to Work
Horses
horses
Pleasure
eyes
Occupations
Medical Records
Eye Enucleation
behavior change
lameness
mares
interviews

Keywords

  • Enucleation
  • Horse
  • Ophthalmology
  • Unilateral
  • Work

ASJC Scopus subject areas

  • Equine

Cite this

Return to work following unilateral enucleation in 34 horses (2000-2008). / Utter, Mary; Wotman, K. L.; Covert, K. R.

In: Equine Veterinary Journal, Vol. 42, No. 2, 01.03.2010, p. 156-160.

Research output: Contribution to journalArticle

Utter, Mary ; Wotman, K. L. ; Covert, K. R. / Return to work following unilateral enucleation in 34 horses (2000-2008). In: Equine Veterinary Journal. 2010 ; Vol. 42, No. 2. pp. 156-160.
@article{625fbf42777445f9a15c23bf5297ce93,
title = "Return to work following unilateral enucleation in 34 horses (2000-2008)",
abstract = "Reasons for study: The effect of unilateral enucleation on vision and potential loss of performance in horses has received little study. Objective: To evaluate the likelihood of return to prior discipline following unilateral enucleation in horses, assessing the role of age at enucleation, equine discipline, reason for enucleation, time to vision loss and eye enucleated. Hypothesis: Unilateral enucleation has no significant effect on likelihood of return to work in horses, for both right and left eyes, across age and discipline. Method: A retrospective review of medical records identified 92 horses that underwent unilateral enucleation at the University of Pennsylvania New Bolton Center from April 2000-April 2008. Case variables determined from the medical record included breed and sex of horse, age at enucleation, which eye was enucleated, reason for enucleation and onset of vision loss. Pre- and post operative occupations were determined by telephone interview with the owner or trainer of each horse. Results: Based on hospital surgery logs, 92 enucleations were performed over the 8 year period and 77 records were available for review, with follow-up information available for 34 horses. Of these, 29/34 (85{\%}) horses returned to work in pleasure or trail riding (11/13), flat racing (7/10), hunter/ jumpers (4/4), dressage (3/3), group lessons (1/1), eventing (1/1), steeplechase (1/1) and as a broodmare (1/1). Four of 5 horses (4/34, or 12{\%} sample) that did not return to work (2 pleasure and 2 racing) were retired due to anticipated or perceived decrease in performance or behaviour change following unilateral enucleation, with the remaining horse retired from racing for lameness issues unrelated to enucleation. Twenty-two of 25 horses (88{\%}) with acute vision loss and 7/9 horses (78{\%}) with gradual vision loss returned to their previous discipline. Conclusions: Horses are able to return to a variety of occupations after unilateral enucleation.",
keywords = "Enucleation, Horse, Ophthalmology, Unilateral, Work",
author = "Mary Utter and Wotman, {K. L.} and Covert, {K. R.}",
year = "2010",
month = "3",
day = "1",
doi = "10.2746/042516409X479577",
language = "English (US)",
volume = "42",
pages = "156--160",
journal = "Equine veterinary journal. Supplement",
issn = "2042-3306",
publisher = "British Equine Veterinary Association",
number = "2",

}

TY - JOUR

T1 - Return to work following unilateral enucleation in 34 horses (2000-2008)

AU - Utter, Mary

AU - Wotman, K. L.

AU - Covert, K. R.

PY - 2010/3/1

Y1 - 2010/3/1

N2 - Reasons for study: The effect of unilateral enucleation on vision and potential loss of performance in horses has received little study. Objective: To evaluate the likelihood of return to prior discipline following unilateral enucleation in horses, assessing the role of age at enucleation, equine discipline, reason for enucleation, time to vision loss and eye enucleated. Hypothesis: Unilateral enucleation has no significant effect on likelihood of return to work in horses, for both right and left eyes, across age and discipline. Method: A retrospective review of medical records identified 92 horses that underwent unilateral enucleation at the University of Pennsylvania New Bolton Center from April 2000-April 2008. Case variables determined from the medical record included breed and sex of horse, age at enucleation, which eye was enucleated, reason for enucleation and onset of vision loss. Pre- and post operative occupations were determined by telephone interview with the owner or trainer of each horse. Results: Based on hospital surgery logs, 92 enucleations were performed over the 8 year period and 77 records were available for review, with follow-up information available for 34 horses. Of these, 29/34 (85%) horses returned to work in pleasure or trail riding (11/13), flat racing (7/10), hunter/ jumpers (4/4), dressage (3/3), group lessons (1/1), eventing (1/1), steeplechase (1/1) and as a broodmare (1/1). Four of 5 horses (4/34, or 12% sample) that did not return to work (2 pleasure and 2 racing) were retired due to anticipated or perceived decrease in performance or behaviour change following unilateral enucleation, with the remaining horse retired from racing for lameness issues unrelated to enucleation. Twenty-two of 25 horses (88%) with acute vision loss and 7/9 horses (78%) with gradual vision loss returned to their previous discipline. Conclusions: Horses are able to return to a variety of occupations after unilateral enucleation.

AB - Reasons for study: The effect of unilateral enucleation on vision and potential loss of performance in horses has received little study. Objective: To evaluate the likelihood of return to prior discipline following unilateral enucleation in horses, assessing the role of age at enucleation, equine discipline, reason for enucleation, time to vision loss and eye enucleated. Hypothesis: Unilateral enucleation has no significant effect on likelihood of return to work in horses, for both right and left eyes, across age and discipline. Method: A retrospective review of medical records identified 92 horses that underwent unilateral enucleation at the University of Pennsylvania New Bolton Center from April 2000-April 2008. Case variables determined from the medical record included breed and sex of horse, age at enucleation, which eye was enucleated, reason for enucleation and onset of vision loss. Pre- and post operative occupations were determined by telephone interview with the owner or trainer of each horse. Results: Based on hospital surgery logs, 92 enucleations were performed over the 8 year period and 77 records were available for review, with follow-up information available for 34 horses. Of these, 29/34 (85%) horses returned to work in pleasure or trail riding (11/13), flat racing (7/10), hunter/ jumpers (4/4), dressage (3/3), group lessons (1/1), eventing (1/1), steeplechase (1/1) and as a broodmare (1/1). Four of 5 horses (4/34, or 12% sample) that did not return to work (2 pleasure and 2 racing) were retired due to anticipated or perceived decrease in performance or behaviour change following unilateral enucleation, with the remaining horse retired from racing for lameness issues unrelated to enucleation. Twenty-two of 25 horses (88%) with acute vision loss and 7/9 horses (78%) with gradual vision loss returned to their previous discipline. Conclusions: Horses are able to return to a variety of occupations after unilateral enucleation.

KW - Enucleation

KW - Horse

KW - Ophthalmology

KW - Unilateral

KW - Work

UR - http://www.scopus.com/inward/record.url?scp=77049111035&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77049111035&partnerID=8YFLogxK

U2 - 10.2746/042516409X479577

DO - 10.2746/042516409X479577

M3 - Article

C2 - 20156252

AN - SCOPUS:77049111035

VL - 42

SP - 156

EP - 160

JO - Equine veterinary journal. Supplement

JF - Equine veterinary journal. Supplement

SN - 2042-3306

IS - 2

ER -